1  /* Indicate that a test requires a working /proc.
       2     Copyright (C) 2022-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <unistd.h>
      20  #include <support/check.h>
      21  #include <support/support.h>
      22  
      23  /* We test for /proc/self/maps since that's one of the files that one
      24     of our tests actually uses, but the general idea is if Linux's
      25     /proc/ (procfs) filesystem is mounted.  If not, the process exits
      26     with an UNSUPPORTED result code.  */
      27  
      28  void
      29  support_need_proc (const char *why_msg)
      30  {
      31  #ifdef __linux__
      32    if (access ("/proc/self/maps", R_OK))
      33      FAIL_UNSUPPORTED ("/proc is not available, %s", why_msg);
      34  #endif
      35  }